کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5920670 1164301 2011 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evolution of freshwater crab diversity in the Aegean region (Crustacea: Brachyura: Potamidae)
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Evolution of freshwater crab diversity in the Aegean region (Crustacea: Brachyura: Potamidae)
چکیده انگلیسی

The aim of this study was to estimate the influence of the palaeogeographic and climatic history of the Aegean region on the diversity of freshwater crabs of the genus Potamon and to test whether this area served as source or reservoir in species diversity. Necessary species delimitation was accomplished by phylogenetic analyses of the mitochondrial markers COX1 and ND1, partial 16S rRNA gene and the tRNALeu gene. We found 14 genetic lineages of which nine could be assigned to previously recognised species. Temporal estimates of the splitting pattern in the phylogeny of Potamon indicated that a combination of geological and climatic events influenced their diversification. Within Potamon, the lineages separated into a western group and an eastern group. This first split in the genus occurred approximately 8.3-5.5 Mya, thus possibly correlated with the Messinian salinity crisis. A likelihood approach to geographic range evolution suggested for most species, occurring in the Aegean area, an origin in the Middle East. Moreover, there were no insular endemics in the central Aegean archipelago, therefore low sea-levels during the Pleistocene glacial periods possibly enabled dispersal to these islands, but subsequent rise in sea-level did not cause speciation. Nevertheless, the diversification of most lineages occurred during the Pleistocene epoch thus coinciding with Quaternary fluctuations of the climate.

Research highlights► Formation of the mid-Aegean trench predates the earliest split within the genus Potamon. ► Insular endemics are absent within the central Aegean archipelago. ► Most Aegean species of Potamon originated outside this area. ► Lineage divergence coincides with Pliocene/Pleistocene climatic transformation to increased aridity and seasonality in Anatolia.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Molecular Phylogenetics and Evolution - Volume 59, Issue 1, April 2011, Pages 23-33
نویسندگان
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